Portable OpenVPN

When you wish to re-host a VPN server while maintaining existing working client configs, you run into configuration and compatibility problems.

This solution creates a "golden" OCI image tarball that can be re-hosted on any compatible platform. Client configs will not expire for 10 years. Google DNS (8.8.8.8) is hardcoded.

Build

Generate Docker image tarball and 16 OpenVPN client configs in dist folder:

PORTABLEVPN_HOSTNAME=myvpnwebsite.com ./build.sh

Deploy on a Linux server

From local machine:

scp dist/portablevpn.tar myvpnwebsite.com:/home/ubuntu/

From server:

# optional cleanup
docker container stop portablevpn
docker container rm portablevpn
docker image rm portablevpn:latest
# load and run
docker image load < portablevpn.tar
docker run -d --name portablevpn --cap-add=NET_ADMIN -p 443:443/tcp portablevpn:latest